Anatomy & Physiology — Animal Science Reviewer Questions

250 board-style Anatomy & Physiology items for the Agriculturist Licensure Examination, free and open to every examinee. Ration and carcass items are calculation-shaped but rarely arithmetic-heavy. Read for what is being asked before reaching for numbers.

250 questions in this topic · part of Animal Science · every answer explained

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Sample Anatomy & Physiology questions with answers and explanations

Board-style items taken from the Animal Science bank. Every answer is explained, which is the part that makes a review question worth doing twice.

A veterinarian palpates a swelling on the inner surface of a goat's right hind limb, closer to the body's midline than the hoof. Which anatomical description is most accurate?
- A. The swelling is ventral and caudal to the hoof.
- B. The swelling is lateral and distal to the hoof.
- C. The swelling is medial and proximal to the hoof. correct
- D. The swelling is dorsal and cranial to the hoof.
Why: Medial means toward the midline and proximal means nearer the point of attachment to the trunk, which is exactly where the swelling sits relative to the hoof. Lateral and distal would describe the opposite position on both axes.
During ultrasonography of a sow, the operator wants an image that divides the body into cranial and caudal portions. Which imaging plane should be used?
- A. A transverse plane correct
- B. A sagittal plane
- C. A median plane
- D. A horizontal plane
Why: A transverse plane cuts across the long axis of the body and so separates it into cranial and caudal portions. Sagittal and median planes divide left from right, and a horizontal plane divides dorsal from ventral.
A carabao has a wound on the lower part of the forelimb, farther from the trunk than the knee. Which term best describes the wound's position relative to the knee?
- A. Proximal
- B. Rostral
- C. Medial
- D. Distal correct
Why: Distal means farther from the trunk along a limb, which is where the wound lies relative to the knee. Proximal is its opposite, and rostral applies to positions on the head.
A poultry diagnostician must determine whether the intestinal villi of broilers are shortened after a disease outbreak. Which approach is most appropriate?
- A. Gross anatomy only
- B. Microscopic anatomy or histology correct
- C. Comparative anatomy only
- D. Embryology
Why: Villus height is a tissue-level feature that can be judged only under the microscope, so histology is the appropriate branch. Gross anatomy examines what can be seen with the unaided eye and would not resolve villi.
After several weeks of resistance exercise, a draft bull's existing skeletal muscle fibers enlarge without a major increase in fiber number. What change occurred?
- A. Hypoplasia
- B. Hypertrophy correct
- C. Aplasia
- D. Hyperplasia
Why: Hypertrophy is an increase in the size of existing cells or fibers, which is what resistance work produces in skeletal muscle. Hyperplasia would be an increase in their number, which is not what the case describes.
A laying hen kept in a small cage develops reduced breast-muscle mass because the muscle is rarely used. Which process best explains this change?
- A. Aplasia
- B. Hypertrophy
- C. Hyperplasia
- D. Atrophy correct
Why: Atrophy is the wasting of a tissue through disuse or loss of stimulation, which is what confinement does to the breast muscle. Hypertrophy is the opposite response, seen with increased work.
A goat loses water through diarrhea, yet its body activates thirst, kidney water conservation, and vasoconstriction. These coordinated responses illustrate which life property?
- A. Homeostasis correct
- B. Growth
- C. Reproduction
- D. Conductivity
Why: Thirst, renal water conservation and vasoconstriction are all corrective responses aimed at holding the internal environment steady, which is homeostasis. They are regulatory rather than growth or reproductive functions.
A dehydrated pig is accidentally given a strongly hypertonic solution. Water leaves many cells because the extracellular fluid has a higher solute concentration. Which process caused the water movement?
- A. Active secretion
- B. Endocytosis
- C. Osmosis correct
- D. Phagocytosis
Why: Osmosis is the movement of water across a membrane toward the more concentrated solution, so a hypertonic extracellular fluid draws water out of the cells. It is a passive movement of water, not an active transport of solute.

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Anatomy & Physiology — Animal Science Reviewer Questions

Sample Anatomy & Physiology questions with answers and explanations

A veterinarian palpates a swelling on the inner surface of a goat's right hind limb, closer to the body's midline than the hoof. Which anatomical description is most accurate?

During ultrasonography of a sow, the operator wants an image that divides the body into cranial and caudal portions. Which imaging plane should be used?

A carabao has a wound on the lower part of the forelimb, farther from the trunk than the knee. Which term best describes the wound's position relative to the knee?

A poultry diagnostician must determine whether the intestinal villi of broilers are shortened after a disease outbreak. Which approach is most appropriate?

After several weeks of resistance exercise, a draft bull's existing skeletal muscle fibers enlarge without a major increase in fiber number. What change occurred?

A laying hen kept in a small cage develops reduced breast-muscle mass because the muscle is rarely used. Which process best explains this change?

A goat loses water through diarrhea, yet its body activates thirst, kidney water conservation, and vasoconstriction. These coordinated responses illustrate which life property?

A dehydrated pig is accidentally given a strongly hypertonic solution. Water leaves many cells because the extracellular fluid has a higher solute concentration. Which process caused the water movement?

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